Oddly, I believe this is probably most correct. Depends how far, but a collision with a celestial object or a big volcano could and will eventually end a lot of

Oddly, I believe this is probably most correct. Depends how far, but a collision with a celestial object or a big volcano could and will eventually end a lot of progress. Like.. Imagine Yellowstone blowing. Whoever survives the winter is gonna be the ones who knap.